It's worth having awards on every airline you ever fly, don't not sign up because you don't think you will be with them again or something like that.

I like to have a cushion of a free ticket with other airlines in case I have to go someplace that my main one doesn't fly, or can't get tickets on, etc.

But unless I'm flying them on a regular basis, I won't concentrate on them for status or anything like that, just enough miles to get someplace.